Why is it not easy to get tanned by the sun in the city, and it turns black after a few days at home?

Take the children back to the countryside in the summer vacation 10 days, the sun is dark. Usually, my children and I are very white. If we want to say how easy it is to get a tan in the countryside, it is because the countryside is big, there are many farm jobs and more opportunities to bask in the sun. Get up at 6 o'clock every day, go to the vegetable garden after washing, run on the road with the children, listen to insects and birds, and feel particularly good. Next, after breakfast, I helped my mother break the corn, dried the corn kernels and peeled them, and then spread them out in the sun. Children should bask in the sun at noon, so they can stand in the sun with a hose and play together. After a nap, I got up and played games with my friends. I ran around and drilled around, my hair was sweaty, and I simply ran around the yard in a pair of shorts. Children don't care about the heat when they play. In the evening, I will go to the vegetable field to water it ... so, in the country, it is difficult to get a tan. But I'm still happy when it's dark, and I'll always come back for nothing, hahaha.

Being on the same earth, why is it easy to get sunburned after going to the countryside? And the city has always been white, which has nothing to do with the water you mentioned.

1. The ultraviolet rays of the sun are stronger.

Because rural areas are mostly land, the absorption of this kind of solar radiation by land is very low, unlike cities, which are all cement roads and cement roofs, and ultraviolet rays are easily reflected by these buildings. Moreover, there are few buildings in rural areas, most of which are open farmland, which is basically exposed to solar radiation, while cities are different, with heavy traffic and dense buildings, which is sometimes a luxury for solar rays.

Two: Going out in rural areas is longer.

In rural areas, you can't stay indoors, because everyone has to go to the farm, and it takes 12 hours during the day and about 8 hours in the field. It takes longer to receive solar radiation and it is easy to turn black. Children, in particular, love to play, so it turns black faster. In the city, in addition to buying food every day, you can also raise a whole set. Especially now there is takeout, and some of them don't go out for a week.

Three: Talk about the maintenance consciousness after returning home.

Have you ever found that when people arrive in the countryside, they gradually become lazy, because there is no fast-paced life, and they can get up whenever they want without any interference. Of course, sometimes I sleep until noon and get up to eat directly. What sunscreen, cream, no, all natural.

Four: There is less air pollution and the sky is bluer.

In the countryside, we are always pleasantly surprised. The sky is really blue, which means that the stronger the ultraviolet rays are, just like the Qinghai-Tibet Plateau. The lower the temperature, the stronger the ultraviolet rays are. Sometimes the skin stings and hurts, and a layer of skin will fall off.

In fact, this black is not natural black, but sunburned by ultraviolet rays. If you go back to the city and take good care of it, it will return to its original appearance in a few days.

And there is a saying in the countryside that the darker the skin, the healthier it is. There is some truth in this statement. To prevent ultraviolet sunburn, there will be fewer mosquito bites after the skin is dark.

When you go back to the countryside, you must bring sunscreen to prevent mosquito bites. After all, black is not welcome in China.

This girl comes from the countryside.

When I was in the city, my face was still white and tender, and so were my hands, but when I went home from the city, my face turned black in less than two days.

It was hot and sunny in the summer vacation, and I went to work in the fields every day, but it was dark anyway.

You said to wear sunscreen, which is impossible. It's black, too. It's useless.

If you don't do farm work in the city, your face is of course white and there is little sunshine.

Back in the city, even my friends almost didn't recognize me, and I was several years older.

Every summer when I go back to the city, I dare not go out in the first week. When I go out, I secretly go out at night, hahaha!

After a week, my face turned white again, hahaha!

The tanning of people's skin has nothing to do with whether people are in the city or in the countryside, or what water they drink.

Skin is easy to get tanned, which is only related to two factors. The first factor: the time of exposure to the sun; The second factor: the intensity of ultraviolet rays in sunlight.

When people go to the countryside, if they stay outdoors for longer than in the city, they will get tanned easily; If the cat stays indoors in the country, it won't get dark. Although the construction site migrant workers in the city are in the city, they are all so dark because they work outdoors and receive direct sunlight every day. This has nothing to do with whether he is in the city or in the countryside and what water he drinks.

The intensity of ultraviolet rays is related to whether the air is clean or not and the density of the air. If the air pollution in some cities is serious, ultraviolet rays will be blocked more, so it is good for skin protection. The air in most rural areas is relatively clean, and ultraviolet rays penetrate strongly, which will cause great harm to the skin. The air in Gansu and Qinghai in the northwest plateau is not only clean, but also has low air pressure and thin air, which is conducive to the penetration of ultraviolet rays. So if you go to the Qinghai-Tibet Plateau for a few days, your skin will be darker than that in rural areas of North China.

The observation of the subject is indeed meticulous, and it is indeed so. Tomb-Sweeping Day is coming soon. It is estimated that many people will go back to their hometown to visit the graves of their deceased relatives. Then, some of them are bound to go out for a few days. When I first came home, everyone was beautiful, but after the holiday, I returned to the city and suddenly became a little black girl. Why is it not easy to get tanned by the sun in the city, and it turns black after a few days at home? Is it because of the water you drink?

Actually, the answer is not like this. It has nothing to do with the water we drink, mainly for the following reasons:

First of all, there are not many obstructions in rural areas. In the city, although we often run outside, we are basically indoors, entering from one building to another and shuttling back and forth between reinforced concrete houses. Even when you go out, there are buses, taxis and subways. Besides, when I go shopping, I'm in a shopping mall, so I don't have a chance to get the sun even outdoors, because there are tall buildings everywhere. It's different in the countryside, and it's inconvenient to travel. Basically by walking, there are no obstacles in the countryside. Even walking will be exposed to the sun.

Secondly, the sun in the countryside is more vicious. Although it is the same sun, the countryside is beautiful, the air quality is better, there is no smog at all, and the ultraviolet intensity is naturally higher. In cities, air pollution is relatively serious, and if nothing else, smog will be much more serious. It is also half an hour in the sun, and the city and the countryside are obviously different.

Finally, after returning to the countryside, I don't pay much attention to dressing up, and often "go out early and come back late". I run outside all day. Can I not get a tan? After returning to the countryside, many people changed to another person, from a beautiful woman in the workplace to a village girl, not only wearing more grounded clothes, but also saving makeup. When going out in cities, people often wear sunscreen, sunglasses and umbrellas, but in rural areas, many people don't pay attention to these things. Besides, there is nothing interesting in the countryside. Playing outside with friends and classmates all day, spending most of the time in the sun, it's easy to get dark.

What's more, some people don't get much sunshine all the year round in the city, and often wear various cosmetics and sunscreen. Their skin is delicate and tends to turn black in the sun. It will clear up soon. Although the ultraviolet intensity is not strong at this time, people who go back to their hometown to sweep the grave should also remember to take good sun protection measures!

Although this problem is small, it does exist. It is not easy to get a tan in the city, but it is easy to get a tan in the countryside for several reasons.

First of all, we can see that rural areas and cities are two relatively different environments. Take the city as an example, there are beautiful things everywhere, with traffic and high-rise buildings, and there are very few places where you can see the sun. Rural areas are different. Most of them are in the open air, and most of the work is done in the open air. It can be said that the sun in the countryside is very big, which is very irritating and harmful to the skin.

Most of the work in the city is done indoors, but it is different in the countryside. Most of them make a living by planting crops, and all of them have to be harvested in the wild and done in the sun.

Another thing I believe everyone has felt is that urban people pay more attention to skin care, while rural people pay special attention to this. You can see a simple example. Take the matter of buying cosmetics. It is enough to see that urban people spend nearly tens of thousands of cosmetics a year, while rural people may spend one or two thousand or even less a year. I deeply feel that my mother does farm work at home all the year round and buys flour oil almost every year. I've hardly seen any other creams. In this respect, rural people do worse, which is why rural skin is the easiest.

Tell me about yourself and answer this question with practical analysis (why is it not easy to get tanned by the sun in the city, but it turns black after a few days at home? )。 I am a man, and there may be subtle differences between women and men, but the differences are basically not too big.

I have just lived in the city for a few years, and my face has really changed. This change will take several months. What I need is a stable job, a stable income from economic sources, and a fixed residence. Such a person who lives in the city, no matter how much his salary is or what his working environment is, usually turns a little white after a few months, which he really won't notice because the change is very slow. It's often relatives and friends who haven't seen you for months, saying that you're white, or comparing your previous photos, you find that you've changed a lot.

Why can't I go out when I get home, and it will turn black if I don't see the sun for a few days?

I know this very well. Every time I go to the countryside for more than four days a week, everyone says it's getting dark. I really don't go outdoors or bask in the sun. Why?

Analyze from several aspects

1, different nutrient intake and absorption. In urban life, due to the solidification of economic resources, the food eaten every day is basically stable, the intensity of activities and work is not much different, and the body has established a corresponding balance. When you suddenly go to the countryside, the food quality changes, or you are usually treated as a guest for a few days, and the balance between nutrient intake and consumption is broken. These two or three days are manifested on the skin surface.

2. The temperature difference is different. A city is a greenhouse with high thermal efficiency, which doesn't change much for a while. The temperature difference will not be too big, whether in your room or outside where there is no direct sunlight. During the day and night, the hardened area such as cement is wide, and the green space is also the hardened edge. The heat released at night makes the temperature difference in the city smaller. Rural areas are different, and the temperature difference between day and night changes greatly, which increases the stimulation to the outer layer of human body.

3, air, urban air, of course, some mixed corrosion, floating in the air are dust particles, but these particles, like toothpaste, wear away the black ink on the human epidermis when we wash the skin. The air in rural areas is fresh, all of which are just spit out by plants. However, the smell of rural oil smoke (oil burning wood smoke and ink dust) floats on people's faces, and their faces are naturally much darker, while the countryside is more open. The cold and hot winds blow into people's cortex, and the pores increase, and fine ink dust falls in, which is naturally much darker.

4, light, there are many high-rise buildings in the city, and the ultraviolet rays that can enter are only a few hours at noon. The countryside is mostly built in the open space of Chaoyang. When the sun shines from morning till night, whether indoors or outdoors, it does not directly bask in the sun, and the strong light formed by reflection is twice or twice as long as that in the city. This makes people's skin a lot darker.

5, water and pH value, most of the water in the city is supplied by the water company, which has been disinfected, and diluted bleaching powder is added to adjust the optimal pH value of the human body. In most rural areas, there is no professional tap water supplied by water companies. Drinking water includes well water, mountain spring water and river water, and most of them have different pH values. A person who has lived in the city for a long time has formed water with the same pH value for a long time, and suddenly went to the country, drank and washed different water quality, and his skin must react. After adding the above infiltration, it really turned black in a few days. I also said that bleaching powder should not bleach people's skin, only when the PH value changes.

Due to my limited knowledge, there may be mistakes in summary and expression, please understand.

Why is it not easy to get a tan in the city, and it turns black after a few days at home?

This is a question that many young people who are away from home are wondering. Even if they blow outside for two days in winter, it will turn black. Why?

The process of urbanization is very fast, and there are high-rise buildings everywhere. Many high-rise buildings will have a lot of curtain wall glass and reflect a lot of ultraviolet rays to reduce the impact of ultraviolet rays on the skin. The countryside is a bungalow with little glass and no tall buildings. Comparatively speaking, the intensity of ultraviolet rays is much greater than that of cities.

Secondly, the air pollution in cities is more serious. Environmental factors such as smog and pm2.5 have caused a large number of small particle pollutants in the air. Even if there is polluted weather in the city, the sky is gray and the ultraviolet intensity is greatly reduced. The air environment in rural areas is better and there are fewer small particle pollutants. Therefore, the blocking effect on ultraviolet rays is much worse, and the intensity of ultraviolet rays in rural areas is higher than that in cities.

Finally, many high-rise buildings in the city will form many natural shadow areas without sunlight radiation. So there is basically no ultraviolet radiation in many areas of the city; For rural areas, such areas are much less.

These are my views on this issue. If there is anything wrong, please let me know.

Alas, we rural people have dark skin, which seems to have little to do with water. Now we all use tap water here, and not all our rural people are darker than urban people, but a few farmers have relatively white skin, which is related to their natural skin.

Farmers who still farm at home and often go to the fields to do farm work generally have darker skin colors. On a hot day, they can bask in the sun as long as they work in the fields. It's strange that they can't get dark under such strong ultraviolet rays.

Go back to your hometown and stay indoors. It's still dark. That can only be related to the climate and air in the countryside. If you can't go out, you can't stay indoors all the time and stay outside for a while. Rural air is good, pollution is light, and ultraviolet rays are strong, especially on sunny days with high temperature. If you stay outside for a while, maybe I will give you some color to see see.

Don't people say that sunbathing is good for health? Black spots are black spots, and health is good.

Living in the city, everyone is either air-conditioned or mobile phone. Even on weekends, they are too lazy to go out for a morning or a day. Take the bus to work and the subway after work. Even if you take your children to a park, you will hide in the shade and watch them laugh and play. Thinking, these Xiong Haizi, such a big sun, are still living so well.

When you go to the countryside, you will find that it is full of memories of your childhood. Three-and four-year-olds suddenly have a childlike interest, chopping bamboo, making fishing rods and basking in the sun. Even if they catch a fish that cats are not very interested in, they are happy to show off everywhere.

When I arrived in the countryside, I realized that the rape blossoms were so beautiful and full of flowers. My wife and children and I took selfies in the rape field all morning.

When I arrived in the country, I realized that the mountains were full of childhood game, mushrooms, wild bamboo shoots and bracken, and suddenly a pheasant appeared.

In the countryside, the air is so fresh, who is still indoors? No one will go out to experience such beautiful scenery in the countryside.

The fun of the city is in the house, and the fun of the countryside is in the wild, so when you go back to your hometown, it will definitely be darker.

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